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day when the temperature is on the decline and condensation would naturally be expected.]
A rainbow after much wet is a prelude to fine weather, especially if it breaks up all at once.
A rainbow in the morning is thought to presage much fine small rain; one at noon, heavy rain in torrents.
Two or three rainbows on the same day may accompany weather on the whole fine, but very much rain will follow in a few days.
Coronæ and Halos.
Coronæ[1] betoken rain when their diameters contract, and fine weather when they increase.
Halos round the Sun or the Moon are nearly sure to be followed by rainy and unsettled weather.
The Aurora Borealis.
This meteor is generally followed within 24 hours by rain and gales of wind, or general unsettled weather.
During the continuance of an auroral display ozone abounds.
Sunrise and Sunset.
If the clouds present at sunrise break up or work off to the W. as the Sun’s elevation increases, a fine day will follow.
If the Sun rises distorted in form, showers may be looked for in summer, but settled weather in winter.
- ↑ Often seen and not to be confounded with Halos.
